From 14b62f16474e181a70e786caee45908cd6a45fdf Mon Sep 17 00:00:00 2001 From: Monk Liu Date: Mon, 25 Dec 2017 11:59:27 +0800 Subject: [PATCH 3624/4131] drm/amdgpu: cleanups for vram lost handling MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 1)create a routine "handle_vram_lost" to do the vram recovery, and put it into amdgpu_device_reset/reset_sriov, this way no need of the extra paramter to hold the VRAM LOST information and the related macros can be removed. 3)show vram_recover failure if time out, and set TMO equal to lockup_timeout if vram_recover is under SRIOV runtime mode. 4)report error if any ip reset failed for SR-IOV Change-Id: I686e2b6133844c14948c206a2315c064a78c1d9c Signed-off-by: Monk Liu Acked-by: Christian König Acked-by: Andrey Grodzovsky Signed-off-by: Kalyan Alle --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 4 - drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 138 +++++++++++++++-------------- 2 files changed, 72 insertions(+), 70 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 37e43fd..d784389 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -183,10 +183,6 @@ extern int amdgpu_cik_support; #define CIK_CURSOR_WIDTH 128 #define CIK_CURSOR_HEIGHT 128 -/* GPU RESET flags */ -#define AMDGPU_RESET_INFO_VRAM_LOST (1 << 0) -#define AMDGPU_RESET_INFO_FULLRESET (1 << 1) - struct amdgpu_device; struct amdgpu_ib; struct amdgpu_cs_parser; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 5a83045..84adc73 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1620,6 +1620,8 @@ static int amdgpu_device_ip_reinit_early_sriov(struct amdgpu_device *adev) r = block->version->funcs->hw_init(adev); DRM_INFO("RE-INIT: %s %s\n", block->version->funcs->name, r?"failed":"successed"); + if (r) + return r; } } @@ -1653,6 +1655,8 @@ static int amdgpu_device_ip_reinit_late_sriov(struct amdgpu_device *adev) r = block->version->funcs->hw_init(adev); DRM_INFO("RE-INIT: %s %s\n", block->version->funcs->name, r?"failed":"successed"); + if (r) + return r; } } @@ -2502,17 +2506,71 @@ static int amdgpu_device_recover_vram_from_shadow(struct amdgpu_device *adev, return r; } +static int amdgpu_device_handle_vram_lost(struct amdgpu_device *adev) +{ + struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring; + struct amdgpu_bo *bo, *tmp; + struct dma_fence *fence = NULL, *next = NULL; + long r = 1; + int i = 0; + long tmo; + + if (amdgpu_sriov_runtime(adev)) + tmo = msecs_to_jiffies(amdgpu_lockup_timeout); + else + tmo = msecs_to_jiffies(100); + + DRM_INFO("recover vram bo from shadow start\n"); + mutex_lock(&adev->shadow_list_lock); + list_for_each_entry_safe(bo, tmp, &adev->shadow_list, shadow_list) { + next = NULL; + amdgpu_device_recover_vram_from_shadow(adev, ring, bo, &next); + if (fence) { + r = dma_fence_wait_timeout(fence, false, tmo); + if (r == 0) + pr_err("wait fence %p[%d] timeout\n", fence, i); + else if (r < 0) + pr_err("wait fence %p[%d] interrupted\n", fence, i); + if (r < 1) { + dma_fence_put(fence); + fence = next; + break; + } + i++; + } + + dma_fence_put(fence); + fence = next; + } + mutex_unlock(&adev->shadow_list_lock); + + if (fence) { + r = dma_fence_wait_timeout(fence, false, tmo); + if (r == 0) + pr_err("wait fence %p[%d] timeout\n", fence, i); + else if (r < 0) + pr_err("wait fence %p[%d] interrupted\n", fence, i); + + } + dma_fence_put(fence); + + if (r > 0) + DRM_INFO("recover vram bo from shadow done\n"); + else + DRM_ERROR("recover vram bo from shadow failed\n"); + + return (r > 0?0:1); +} + /* * amdgpu_device_reset - reset ASIC/GPU for bare-metal or passthrough * * @adev: amdgpu device pointer - * @reset_flags: output param tells caller the reset result * * attempt to do soft-reset or full-reset and reinitialize Asic * return 0 means successed otherwise failed */ -static int amdgpu_device_reset(struct amdgpu_device *adev, - uint64_t* reset_flags) +static int amdgpu_device_reset(struct amdgpu_device *adev) { bool need_full_reset, vram_lost = 0; int r; @@ -2527,7 +2585,6 @@ static int amdgpu_device_reset(struct amdgpu_device *adev, DRM_INFO("soft reset failed, will fallback to full reset!\n"); need_full_reset = true; } - } if (need_full_reset) { @@ -2576,13 +2633,8 @@ static int amdgpu_device_reset(struct amdgpu_device *adev, } } - if (reset_flags) { - if (vram_lost) - (*reset_flags) |= AMDGPU_RESET_INFO_VRAM_LOST; - - if (need_full_reset) - (*reset_flags) |= AMDGPU_RESET_INFO_FULLRESET; - } + if (!r && ((need_full_reset && !(adev->flags & AMD_IS_APU)) || vram_lost)) + r = amdgpu_device_handle_vram_lost(adev); return r; } @@ -2591,14 +2643,11 @@ static int amdgpu_device_reset(struct amdgpu_device *adev, * amdgpu_device_reset_sriov - reset ASIC for SR-IOV vf * * @adev: amdgpu device pointer - * @reset_flags: output param tells caller the reset result * * do VF FLR and reinitialize Asic * return 0 means successed otherwise failed */ -static int amdgpu_device_reset_sriov(struct amdgpu_device *adev, - uint64_t *reset_flags, - bool from_hypervisor) +static int amdgpu_device_reset_sriov(struct amdgpu_device *adev, bool from_hypervisor) { int r; @@ -2619,27 +2668,18 @@ static int amdgpu_device_reset_sriov(struct amdgpu_device *adev, /* now we are okay to resume SMC/CP/SDMA */ r = amdgpu_device_ip_reinit_late_sriov(adev); + amdgpu_virt_release_full_gpu(adev, true); if (r) goto error; amdgpu_irq_gpu_reset_resume_helper(adev); r = amdgpu_ib_ring_tests(adev); - if (r) - dev_err(adev->dev, "[GPU_RESET] ib ring test failed (%d).\n", r); + if (!r && adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) { + atomic_inc(&adev->vram_lost_counter); + r = amdgpu_device_handle_vram_lost(adev); + } error: - /* release full control of GPU after ib test */ - amdgpu_virt_release_full_gpu(adev, true); - - if (reset_flags) { - if (adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) { - (*reset_flags) |= AMDGPU_RESET_INFO_VRAM_LOST; - atomic_inc(&adev->vram_lost_counter); - } - - /* VF FLR or hotlink reset is always full-reset */ - (*reset_flags) |= AMDGPU_RESET_INFO_FULLRESET; - } return r; } @@ -2658,7 +2698,6 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev, struct amdgpu_job *job, bool force) { struct drm_atomic_state *state = NULL; - uint64_t reset_flags = 0; int i, r, resched; if (!force && !amdgpu_device_ip_check_soft_reset(adev)) { @@ -2706,42 +2745,9 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev, } if (amdgpu_sriov_vf(adev)) - r = amdgpu_device_reset_sriov(adev, &reset_flags, job ? false : true); - else - r = amdgpu_device_reset(adev, &reset_flags); - - if (!r) { - if (((reset_flags & AMDGPU_RESET_INFO_FULLRESET) && !(adev->flags & AMD_IS_APU)) || - (reset_flags & AMDGPU_RESET_INFO_VRAM_LOST)) { - struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring; - struct amdgpu_bo *bo, *tmp; - struct dma_fence *fence = NULL, *next = NULL; - - DRM_INFO("recover vram bo from shadow\n"); - mutex_lock(&adev->shadow_list_lock); - list_for_each_entry_safe(bo, tmp, &adev->shadow_list, shadow_list) { - next = NULL; - amdgpu_device_recover_vram_from_shadow(adev, ring, bo, &next); - if (fence) { - r = dma_fence_wait(fence, false); - if (r) { - WARN(r, "recovery from shadow isn't completed\n"); - break; - } - } - - dma_fence_put(fence); - fence = next; - } - mutex_unlock(&adev->shadow_list_lock); - if (fence) { - r = dma_fence_wait(fence, false); - if (r) - WARN(r, "recovery from shadow isn't completed\n"); - } - dma_fence_put(fence); - } - } + r = amdgpu_device_reset_sriov(adev, job ? false : true); + else + r = amdgpu_device_reset(adev); for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { struct amdgpu_ring *ring = adev->rings[i]; -- 2.7.4